Still searching for William Poffenberger 1807-1872

In reference to your find of a second book, I just thought that there might be a chance of finding information on my GG grandfather or his wives, as you can see I still have very limited information on him, I do not even know his middle name :

William ? Poffenbergerb.??/??/1807or10 - d.??/??/1872 buried in the South Fork Cemetery, Illinois &(1st wife unknown, may have been Mary Fink?) &(2nd wife Mary Elizabeth Harris, died 10/??/1850, in childbirth with twin girls who also died, Retta & Etta) &(3rd wife may have been Rebecca Johnston, married him on 10/15/1855)